Half an hour HR interview, classic questions plus two brain teasers. Then interview with trading operations, nice guy, went through my understanding of market making and trading and a brain teaser. Rejected on third interview with trader, went once again through my understanding of what they did, my profile and 1 brainteaser
Interview questions [1]
Question 1
Brainteasers such as hour and hand minute, 100 door and 100 people alternatively opening/closing the doors, questions about market making and trading and profile questions
HackerRank screening sent out containing typical problems that one would expect. I have not heard back since. I am not sure about the rest of the process after the first screener.
I submitted resume online, then I had a coding challenge, then I had two phone screens. After that I was invited on site in the New York office. Friendly people, good interview process.